| Singleton | Unisex | English Names |
| Sinjin | Man | English Names |
| Sir | Man | English Names |
| Sire | Man | English Names |
| Skaggs | Unisex | English Names |
| Skinner | Unisex | English Names |
| Skipper | Man | English Names |
| Slade | Man | English Names |
| Slater | Unisex | English Names |
| Smith | Man | English Names |
| Snow | Woman | English Names |
| Snowy | Unisex | English Names |
| Snyder | Man | English Names |
| Solstice | Woman | English Names |
| Sonnet | Unisex | English Names |
| Sorley | Man | English Names |
| Sparks | Unisex | English Names |
| Sparrow | Unisex | English Names |
| Spence | Man | English Names |
| Spencer | Unisex | English Names |